Most of the members of this organization have heard me in season and out of season, talking about breast feeding, and the study we have been making of it at the University of Minnesota. Although the statistics will not be ready until September, enough data have come so that we have records which indicate what we have learned and accomplished. I have had so many inquiries in regard to our technic, that I am taking this opportunity to explain the essential parts to those who are interested.

The investigation of breast feeding in Minneapolis was planned to study the wider applicability of certain principles of breast feeding which we have been using at the University of Minnesota and in private work. We wished to see whether these principles are applicable to a wider field, and to all strata of society. We wished to make a statistical study to observe the